全文获取类型
收费全文 | 20482篇 |
免费 | 1739篇 |
国内免费 | 433篇 |
专业分类
耳鼻咽喉 | 434篇 |
儿科学 | 2172篇 |
妇产科学 | 611篇 |
基础医学 | 2287篇 |
口腔科学 | 605篇 |
临床医学 | 2121篇 |
内科学 | 3458篇 |
皮肤病学 | 452篇 |
神经病学 | 923篇 |
特种医学 | 980篇 |
外科学 | 3712篇 |
综合类 | 2249篇 |
预防医学 | 663篇 |
眼科学 | 1044篇 |
药学 | 524篇 |
9篇 | |
中国医学 | 117篇 |
肿瘤学 | 293篇 |
出版年
2024年 | 32篇 |
2023年 | 304篇 |
2022年 | 456篇 |
2021年 | 711篇 |
2020年 | 794篇 |
2019年 | 783篇 |
2018年 | 690篇 |
2017年 | 702篇 |
2016年 | 660篇 |
2015年 | 623篇 |
2014年 | 1127篇 |
2013年 | 1266篇 |
2012年 | 958篇 |
2011年 | 1091篇 |
2010年 | 927篇 |
2009年 | 979篇 |
2008年 | 971篇 |
2007年 | 958篇 |
2006年 | 963篇 |
2005年 | 911篇 |
2004年 | 731篇 |
2003年 | 639篇 |
2002年 | 529篇 |
2001年 | 451篇 |
2000年 | 395篇 |
1999年 | 365篇 |
1998年 | 368篇 |
1997年 | 337篇 |
1996年 | 306篇 |
1995年 | 264篇 |
1994年 | 237篇 |
1993年 | 250篇 |
1992年 | 191篇 |
1991年 | 187篇 |
1990年 | 152篇 |
1989年 | 144篇 |
1988年 | 126篇 |
1987年 | 114篇 |
1986年 | 108篇 |
1985年 | 159篇 |
1984年 | 134篇 |
1983年 | 87篇 |
1982年 | 96篇 |
1981年 | 81篇 |
1980年 | 80篇 |
1979年 | 63篇 |
1978年 | 35篇 |
1977年 | 31篇 |
1976年 | 28篇 |
1975年 | 16篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
《Orthopaedics and Trauma》2022,36(6):304-310
Congenital vertical talus (CVT) is a rare foot deformity that presents with a rigid flat foot at birth. CVT can present as an isolated abnormality in the newborn, however in at least 50% of cases in association with other conditions. Full neuro-axial imaging is essential to detect any associated neurologic problems. Radiographs of the foot, including forced plantar and dorsiflexion laterals, are diagnostic. Gold standard modern treatment uses the Dobbs method of serial manipulation and casting with minimally-invasive stabilization of the talonavicular joint and Achilles tendon tenotomy. 相似文献
2.
3.
4.
《Diagnostic and interventional imaging》2020,101(6):335-345
This article was designed to provide a pediatric cardiac computed tomography angiography (CCTA) expert panel consensus based on opinions of experts of the Société Française d’Imagerie Cardiaque et Vasculaire diagnostique et interventionnelle (SFICV) and of the Filiale de Cardiologie Pédiatrique Congénitale (FCPC). This expert panel consensus includes recommendations for indications, patient preparation, CTA radiation dose reduction techniques, and post-processing techniques. The consensus was based on data from available literature (original papers, reviews and guidelines) and on opinions of a group of specialists with extensive experience in the use of CT imaging in congenital heart disease. In order to reach high potential and avoid pitfalls, CCTA in children with congenital heart disease requires training and experience. Moreover, pediatric cardiac CCTA protocols should be standardized to acquire optimal images in this population with the lowest radiation dose possible to prevent unnecessary radiation exposure. We also provided a suggested structured report and a list of acquisition protocols and technical parameters in relation to specific vendors. 相似文献
5.
Christopher Yeh Cem Atillasoy John T. Seykora Vivian Lee 《Journal of cutaneous pathology》2021,48(1):171-173
Respiratory cysts are benign lesions lined by normal respiratory epithelium. There are few reported cases localized to the orbit, while those of the eyelid are exceedingly rare. Respiratory cysts usually arise either from a non‐hereditary congenital malformation, where they are distinguished as choristomatous, or from trauma. Here, we report a case of a 53‐year‐old man who presented with a large right lower eyelid cyst that was histopathologically diagnosed as a respiratory cyst. 相似文献
6.
Rationale:Tarlov or perineurial cysts are nerve root lesions often found in the sacral region. Most perineural cysts (PCs) remain asymptomatic throughout a patient''s life. While their pathogenesis is still unclear, trauma resulting in hemorrhaging into subarachnoid space has been put forward as a possible cause of these cysts. Recently, we worked with a patient experiencing symptomatic PCs after spontaneous subarachnoid hemorrhage.Patient concerns:A 45-year-old man had a coil embolization procedure performed after being diagnosed with a subarachnoid hemorrhage from a ruptured anterior communicating artery. His symptoms were relieved after the procedure, but 7 days later he reported worsening pain in the left perineal area. The pain was intermittent at its onset and exacerbated by sitting, walking, and coughing.Diagnoses:Two weeks after the embolization procedure, a lumbar spine MRI revealed 2 PCs at the S1 and S2 level affecting the left S2 root with high signal intensity in T2 and T1 images, suggestive of bleeding within the cyst.Interventions:We operated using a posterior approach. Cyst fenestration was done after S1 laminectomy. We aspirated approximately 1 cc of old blood.Outcomes:His pain was relieved immediately after cyst removal and no neurologic deterioration occurred during the postoperative period.Lessons:Subarachnoid hemorrhage can be the source of the development of pain from asymptomatic PCs, making them symptomatic. Surgical extirpation is 1 treatment option for these symptomatic PCs. 相似文献
7.
8.
9.
Takahiro Namiki Chika Takano Ryoji Aoki Quang Duy Trinh Ichiro Morioka Satoshi Hayakawa 《Congenital anomalies》2022,62(1):38-41
Congenital rubella syndrome (CRS) results from maternal rubella virus infection in early pregnancy. Abnormal neuroimaging findings have been analyzed in a small number of CRS patients in the past; however, their clinical significance has been poorly addressed. Therefore, we have investigated the neuroimaging findings of 31 patients with CRS from previous studies. The most common finding was parenchymal calcification, which was observed in 18 of 31 patients (58.1%). A multivariable logistic regression model showed that it was associated with psychomotor or mental retardation (p = 0.018), suggesting that parenchymal calcification in CRS could be a prognostic factor. 相似文献
10.
Gudrun Aspelund Elaa M Mahdi David H Rothstein Derek S Wakeman 《Journal of gastroenterology and hepatology》2019,34(6):966-974
Choledochal cysts (CDCs) and biliary atresia (BA) are rare pediatric hepatobiliary anomalies that require surgical intervention due to increased risk of malignancy and liver failure, respectively. The underlying disease and operative procedures place patients at risk for long‐term complications, which may continue to affect them into adulthood. Lack of a transitional care model in the health‐care system potentiates the challenges they will face following aging out of their pediatric providers' care. We sought to elucidate the long‐term complications and challenges patients with CDCs and BA face, review the current literature regarding transitioning care, and propose guidelines aiding adult providers in continued care and surveillance of these patients. A literature review was performed to assess short‐term and long‐term complications after surgery and the current standards for transitioning care in patients with a history of CDCs and BA. While transitional programs exist for patients with other gastrointestinal diseases, there are few that focus on CDCs or BA. Generally, authors encourage medical record transmission from pediatric to adult providers, ensuring accuracy of information and compliance with treatment plans. Patients with CDCs are at risk for developing biliary malignancies, cholangitis, and anastomotic strictures after resection. Patients with BA develop progressive liver failure, necessitating transplantation. There are no consensus guidelines regarding timing of follow up for these patients. Based on the best available evidence, we propose a schema for long‐term surveillance. 相似文献